Thanks chaps. The lamp posts are not models as you've guessed; they're the third iteration of them and the most complex and best so far and are not entirely unlike some uk lamp posts. I think the scale's off, but the generally shape isn't too far away. I would prefer them to be mdls, but, although I've dabbled with blender, I still suck at modelling. Oh for an easy .map to .mdl program.
As far as the mod goes, I've had a significant breakthrough, narrative wise, that's going to help me push on with the rest of it. There's some coding implications, especially some CSQC that I'll need to learn, but that's no bad thing

Happy days